@article{BSMF_1965__93__193_0,
     author = {Souriau, Jean-Marie},
     title = {Prolongements du champ de {Schwarzschild}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {193--207},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {93},
     year = {1965},
     doi = {10.24033/bsmf.1622},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1622/}
}